﻿using System;

//If you want to know what is NDB21, send me a mail :)
class PrintNNumbersNDB21
{
    static void Main()
    {
        Console.WriteLine("2. Print N numbers form [1...N] Not Divisible By 21 .\n");
        Console.Write("Numbers to print :");
        int numbers = int.Parse(Console.ReadLine());
        for (int i = 1; i <= numbers; i++)
        {
            if (i % 21 != 0)
            {
                Console.WriteLine(i);
            }
        }
    }
}

